EP4379897A3 - Battery cell, battery and electric device - Google Patents

Battery cell, battery and electric device Download PDF

Info

Publication number
EP4379897A3
EP4379897A3 EP23212008.9A EP23212008A EP4379897A3 EP 4379897 A3 EP4379897 A3 EP 4379897A3 EP 23212008 A EP23212008 A EP 23212008A EP 4379897 A3 EP4379897 A3 EP 4379897A3
Authority
EP
European Patent Office
Prior art keywords
negative electrode
positive electrode
electrode plate
battery
inner ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23212008.9A
Other languages
German (de)
French (fr)
Other versions
EP4379897A2 (en
Inventor
Hui Cao
Dandan Chen
Min HOU
Xuxiang WANG
Wei Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Ruipu Energy Co Ltd
Rept Battero Energy Co Ltd
Original Assignee
Shanghai Ruipu Energy Co Ltd
Rept Battero Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Ruipu Energy Co Ltd, Rept Battero Energy Co Ltd filed Critical Shanghai Ruipu Energy Co Ltd
Publication of EP4379897A2 publication Critical patent/EP4379897A2/en
Publication of EP4379897A3 publication Critical patent/EP4379897A3/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/028—Positive electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M2010/4292—Aspects relating to capacity ratio of electrodes/electrolyte or anode/cathode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The present invention relates to a battery cell, a battery, and an electric device, and relates to the field of battery. The battery cell comprises a positive electrode plate, wherein the positive electrode plate comprises a positive electrode inner ring, a positive electrode current collector, and a positive electrode outer ring arranged sequentially from inside to outside; a negative electrode plate, wherein the negative electrode plate comprises a negative electrode inner ring, a negative electrode current collector, and a negative electrode outer ring arranged sequentially from inside to outside; and a separator, wherein the separator is located between the positive electrode plate and the negative electrode plate, and the positive electrode plate, the separator, and the negative electrode plate together form the battery cell; wherein, a surface density of the positive electrode inner ring is less than that of the positive electrode outer ring, and/or a surface density of the negative electrode inner ring is less than that of the negative electrode outer ring. The present invention can reduce the expansion rate of the negative electrode plate, making it difficult for the negative electrode inner ring to fracture and fail at the position with large curvature, thereby improving the service life of the wound battery during the (high rate) charging and discharging process.
EP23212008.9A 2022-11-29 2023-11-24 Battery cell, battery and electric device Pending EP4379897A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211507915.2A CN115548468B (en) 2022-11-29 2022-11-29 Battery cells, batteries and electrical devices

Publications (2)

Publication Number Publication Date
EP4379897A2 EP4379897A2 (en) 2024-06-05
EP4379897A3 true EP4379897A3 (en) 2024-12-11

Family

ID=84722484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23212008.9A Pending EP4379897A3 (en) 2022-11-29 2023-11-24 Battery cell, battery and electric device

Country Status (4)

Country Link
US (1) US20240178461A1 (en)
EP (1) EP4379897A3 (en)
CN (1) CN115548468B (en)
WO (1) WO2024114423A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115548468B (en) * 2022-11-29 2023-04-21 瑞浦兰钧能源股份有限公司 Battery cells, batteries and electrical devices
CN116682936B (en) * 2023-08-04 2024-01-12 宁德时代新能源科技股份有限公司 Battery, preparation method thereof and electricity utilization device
CN118867408B (en) * 2024-08-05 2025-10-31 安徽得壹能源科技有限公司 Lithium ion battery and method for preventing lithium ion battery from cycle failure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018195500A (en) * 2017-05-19 2018-12-06 株式会社Ｓｏｋｅｎ Lithium ion secondary battery
CN109428052A (en) * 2017-08-31 2019-03-05 横店集团东磁股份有限公司 A kind of cylindrical battery and preparation method thereof
EP3916882A1 (en) * 2019-05-03 2021-12-01 Lg Energy Solution, Ltd. Electrode assembly and manufacturing method therefor
EP4068418A1 (en) * 2021-02-04 2022-10-05 Contemporary Amperex Technology Co., Limited Electrode assembly and manufacturing method and system therefor, battery cell, and battery

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016058169A (en) * 2014-09-05 2016-04-21 トヨタ自動車株式会社 Nonaqueous electrolyte secondary battery and method for manufacturing the same
JP6819107B2 (en) * 2016-07-12 2021-01-27 株式会社村田製作所 Batteries, battery packs, electronic devices, electric vehicles, power storage devices and power systems
CN110660965B (en) * 2019-08-29 2021-12-17 孚能科技(赣州)股份有限公司 Negative plate and preparation method thereof, lithium ion battery and preparation method and application thereof
CN110676518B (en) * 2019-09-19 2020-06-26 宜宾锂宝新材料有限公司 A kind of method for preventing lithium ion deposition in negative electrode of lithium ion battery
CN114914553A (en) * 2022-05-16 2022-08-16 湖北亿纬动力有限公司 Positive pole piece of battery with winding structure and application thereof
CN217740617U (en) * 2022-05-30 2022-11-04 瑞浦兰钧能源股份有限公司 Battery, electronic product and electric vehicle
CN115084428A (en) * 2022-06-30 2022-09-20 东莞锂威能源科技有限公司 A method for improving lithium precipitation at the corner of a winding core, a preparation process for a battery, and a battery
CN115548468B (en) * 2022-11-29 2023-04-21 瑞浦兰钧能源股份有限公司 Battery cells, batteries and electrical devices

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018195500A (en) * 2017-05-19 2018-12-06 株式会社Ｓｏｋｅｎ Lithium ion secondary battery
CN109428052A (en) * 2017-08-31 2019-03-05 横店集团东磁股份有限公司 A kind of cylindrical battery and preparation method thereof
EP3916882A1 (en) * 2019-05-03 2021-12-01 Lg Energy Solution, Ltd. Electrode assembly and manufacturing method therefor
EP4068418A1 (en) * 2021-02-04 2022-10-05 Contemporary Amperex Technology Co., Limited Electrode assembly and manufacturing method and system therefor, battery cell, and battery

Also Published As

Publication number Publication date
CN115548468A (en) 2022-12-30
US20240178461A1 (en) 2024-05-30
WO2024114423A1 (en) 2024-06-06
EP4379897A2 (en) 2024-06-05
CN115548468B (en) 2023-04-21

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